下载 PDF 并保存到“文件"在 iPhone 中，而不是应用程序数据，Swift [英] Download PDF and save to the "Files" in iPhone, not to the app data, Swift

问题描述

我尝试使用以下代码下载 pdf 文件.它存储在应用程序数据中.但我需要在 iPhone 的 文件" 文件夹中显示下载的 pdf.

I tried downloading pdf files with the below code. Here it's storing in the app data. But I need to show the downloaded pdf in "Files" folder in iPhone.

    // Create destination URL
    let documentsUrl:URL =  FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first as URL!
    let destinationFileUrl = documentsUrl.appendingPathComponent("downloadedFile.jpg")

    //Create URL to the source file you want to download
    let fileURL = URL(string: "http://swift-lang.org/guides/tutorial.pdf")

    let sessionConfig = URLSessionConfiguration.default
    let session = URLSession(configuration: sessionConfig)

    let request = URLRequest(url:fileURL!)

    let task = session.downloadTask(with: request) { (tempLocalUrl, response, error) in
        if let tempLocalUrl = tempLocalUrl, error == nil {
            // Success
            if let statusCode = (response as? HTTPURLResponse)?.statusCode {
                print("Successfully downloaded. Status code: (statusCode)")
            }

            do {
                try FileManager.default.copyItem(at: tempLocalUrl, to: destinationFileUrl)
            } catch (let writeError) {
                print("Error creating a file (destinationFileUrl) : (writeError)")
            }

        } else {
            print("Error took place while downloading a file. Error description: %@", error?.localizedDescription ?? "");
        }
    }
    task.resume()

有可能吗??

推荐答案

这里是如何下载任何文件并保存到照片(如果是图像文件)或文件(如果是 pdf)

Here's how to download any files and save to Photos(if image file) or Files (if pdf)

let urlString = "your file url"
let url = URL(string: urlString)
let fileName = String((url!.lastPathComponent)) as NSString
// Create destination URL
let documentsUrl:URL =  FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first as URL!
let destinationFileUrl = documentsUrl.appendingPathComponent("(fileName)")
//Create URL to the source file you want to download
let fileURL = URL(string: urlString)
let sessionConfig = URLSessionConfiguration.default
let session = URLSession(configuration: sessionConfig)
let request = URLRequest(url:fileURL!)
let task = session.downloadTask(with: request) { (tempLocalUrl, response, error) in
    if let tempLocalUrl = tempLocalUrl, error == nil {
        // Success
        if let statusCode = (response as? HTTPURLResponse)?.statusCode {
            print("Successfully downloaded. Status code: (statusCode)")
        }
        do {
            try FileManager.default.copyItem(at: tempLocalUrl, to: destinationFileUrl)
            do {
                //Show UIActivityViewController to save the downloaded file
                let contents  = try FileManager.default.contentsOfDirectory(at: documentsUrl, includingPropertiesForKeys: nil, options: .skipsHiddenFiles)
                for indexx in 0..<contents.count {
                    if contents[indexx].lastPathComponent == destinationFileUrl.lastPathComponent {
                        let activityViewController = UIActivityViewController(activityItems: [contents[indexx]], applicationActivities: nil)
                        self.present(activityViewController, animated: true, completion: nil)
                    }
                }
            }
            catch (let err) {
                print("error: (err)")
            }
        } catch (let writeError) {
            print("Error creating a file (destinationFileUrl) : (writeError)")
        }
    } else {
        print("Error took place while downloading a file. Error description: (error?.localizedDescription ?? "")")
    }
}
task.resume()

这篇关于下载 PDF 并保存到“文件"在 iPhone 中，而不是应用程序数据，Swift的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！